EP0233604B1 - Pressure regulator - Google Patents

Pressure regulator Download PDF

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Publication number
EP0233604B1
EP0233604B1 EP19870102015 EP87102015A EP0233604B1 EP 0233604 B1 EP0233604 B1 EP 0233604B1 EP 19870102015 EP19870102015 EP 19870102015 EP 87102015 A EP87102015 A EP 87102015A EP 0233604 B1 EP0233604 B1 EP 0233604B1
Authority
EP
European Patent Office
Prior art keywords
spring
spring holder
stop
holder
abutment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870102015
Other languages
German (de)
French (fr)
Other versions
EP0233604A2 (en
EP0233604A3 (en
Inventor
John D. Buezis
Paul Dietiker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell Inc
Original Assignee
Honeywell Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of EP0233604A2 publication Critical patent/EP0233604A2/en
Publication of EP0233604A3 publication Critical patent/EP0233604A3/en
Application granted granted Critical
Publication of EP0233604B1 publication Critical patent/EP0233604B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
    • G05D16/0661—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane characterised by the loading mechanisms of the membrane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7822—Reactor surface closes chamber
    • Y10T137/7823—Valve head in inlet chamber
    • Y10T137/7825—Rectilinear valve stem rigid with reactor surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7822—Reactor surface closes chamber
    • Y10T137/7823—Valve head in inlet chamber
    • Y10T137/7826—With valve closing bias

Definitions

  • a spring holder is used which can be inserted into the spring housing and once inserted is locked in place so that adjustment of the spring can be made and yet the spring cannot be removed and replaced to change the regulator capacity or pressure range which might result in an unsafe condition.
  • Preferred embodiments are described in the sub-claims. For explaining the invention reference is made to the embodiment shown in the drawing. Therein
  • a pressure operated valve 10 similar to the valve disclosed in Figure 4 of US-A 3 289 692, has a valve housing comprising a lower portion II and an upper portion 12 which are fastened together in a conventional manner.
  • An apertured wall member 13 is held in position to form an inlet chamber 14 and an outlet chamber 15 which could be connected by an inlet opening 20 to a source of gas under pressure and an outlet opening 21 for delivering pressure controlled gas to an appliance.
  • Wall 13 has a valve seat opening 22 through which gas flows from the inlet chamber 14 to the outlet chamber 15.
  • a spring housing 23 which has internal threads 24 and an internal stop means 25 providing first and second stop surfaces.
  • a flexible diaphragm 30 forms one side of outlet chamber 15 and has attached thereto a solid stiffening plate 31.
  • a valve closure member 32 is connected to plate 31 and operates when plate 31 moves upward to move closure member 32 against the valve seat 22 and close the opening between inlet chamber 14 and outlet chamber 15.
  • a spring holder 33 is mounted in spring housing 23 and a compression spring 34 is supported between spring holder 33 and plate 31 to which a centering projection 35 is attached to center the position of the spring 34 on dialphragm 30.
  • Spring holder 33 can be positioned upward and downward to change the compression force on spring 34 by an adjustable screw abutment 40 in the spring housing 23 which is set and thereafter protected from adjustment by a cap screw 41.
  • Abutment 40 engages spring holder 33 around its perimeter to establish a stable back abutment for spring 34.
  • Spring holder 33 is made up of an upper disc-like member 42 which has a plurality of resilient legs 43 projecting downward. Each of the legs has a barb- like extremity 44 which have a sloping surface and a flat latching surface so that when the spring holder is inserted into the spring housing, the projections 43 are biased inward when the sloping surface of barbed member 44 hits stop 25, and once in place, the spring holder 33 cannot be removed as any upward movement causes the flat latching surface of barbs 44 to engage stop 25.
  • spring holder 33 is positioned downward to provide a maximum compression of spring 34 as the disc-like portion of the spring holder engages the upper ring-shaped surface of stop 25 forming a first stop to provide a maximum pressure to the outlet 21 by the pressure operated valve.
  • the spring holder 33 is in the maximum upward position where the flat latching surfaces of barbs 44 engage the lower ring-shaped surface of stop 25 forming a second stop, and even though the set screw 40 and cap 41 shown in Figures 1 and 2 are removed, the spring holder does not leave the spring housing but control of the outlet pressure in chamber 15 would be at a minimum pressure.
  • FIG. 4 A specific detailed showing of the spring holder 33 is shown in Figure 4 wherein the disc member 42 has the four resilient legs 43 projecting therefrom.
  • the spring holder With such a pressure operated valve, the spring holder can be inserted into the spring housing and once inserted is held in place.
  • the resilient projections or legs 43 are biased inward upon the downward movement of the spring holder in the valve housing to allow the barbs or projection extremities 44 to move past the stop 25; however, any upward movement of the spring holder is thereafter prevented. Any removal and replacement of the spring 34 by a spring of a different spring rate to change the outlet pressure of the pressure operated valve is prevented. This makes such a pressure regulator even more safe and reliable for ist use with gas appliances or furnaces.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)

Description

  • Gas controls for gas burners have for many years been made with a high degree of reliability as much is at stake upon the failure of such gas controls. Furthermore, the manufacturers of gas controls have tried to prevent such controls from being tampered with or adjusted by unqualified personnel. In US-A 3 289 692 a cap of the regulator can be sealed to prevent tampering with the adjustment member of the regulator.
  • It is the object of the present invention to provide a pressure regulator or pressure operated valve wherein the regulator spring cannot be removed and replaced by a different spring. This is accomplished by the invention as characterized in claim 1. A spring holder is used which can be inserted into the spring housing and once inserted is locked in place so that adjustment of the spring can be made and yet the spring cannot be removed and replaced to change the regulator capacity or pressure range which might result in an unsafe condition. Preferred embodiments are described in the sub-claims. For explaining the invention reference is made to the embodiment shown in the drawing. Therein
    • Figure I is a cross-sectional view of the pressure operated valve showing the spring holder;
    • Figure 2 is a detailed showing of the spring holder in the position to provide maximum compression on the spring with the spring holder hitting the stop;
    • Figure 3 is a showing of the adjustment of the spring holder in a relaxed position engaging the stop; and
    • Figure 4 is a detailed showing of the spring holder having a disc shape with four resilient legs.
  • Referring to Figure I, a pressure operated valve 10, similar to the valve disclosed in Figure 4 of US-A 3 289 692, has a valve housing comprising a lower portion II and an upper portion 12 which are fastened together in a conventional manner. An apertured wall member 13 is held in position to form an inlet chamber 14 and an outlet chamber 15 which could be connected by an inlet opening 20 to a source of gas under pressure and an outlet opening 21 for delivering pressure controlled gas to an appliance. Wall 13 has a valve seat opening 22 through which gas flows from the inlet chamber 14 to the outlet chamber 15. Attached thereto and being an integral part of the upper portion 12 of the valve body is a spring housing 23 which has internal threads 24 and an internal stop means 25 providing first and second stop surfaces. A flexible diaphragm 30 forms one side of outlet chamber 15 and has attached thereto a solid stiffening plate 31. A valve closure member 32 is connected to plate 31 and operates when plate 31 moves upward to move closure member 32 against the valve seat 22 and close the opening between inlet chamber 14 and outlet chamber 15. A spring holder 33 is mounted in spring housing 23 and a compression spring 34 is supported between spring holder 33 and plate 31 to which a centering projection 35 is attached to center the position of the spring 34 on dialphragm 30. Spring holder 33 can be positioned upward and downward to change the compression force on spring 34 by an adjustable screw abutment 40 in the spring housing 23 which is set and thereafter protected from adjustment by a cap screw 41. Abutment 40 engages spring holder 33 around its perimeter to establish a stable back abutment for spring 34.
  • Spring holder 33 is made up of an upper disc-like member 42 which has a plurality of resilient legs 43 projecting downward. Each of the legs has a barb- like extremity 44 which have a sloping surface and a flat latching surface so that when the spring holder is inserted into the spring housing, the projections 43 are biased inward when the sloping surface of barbed member 44 hits stop 25, and once in place, the spring holder 33 cannot be removed as any upward movement causes the flat latching surface of barbs 44 to engage stop 25.
  • As shown in Figure 2, spring holder 33 is positioned downward to provide a maximum compression of spring 34 as the disc-like portion of the spring holder engages the upper ring-shaped surface of stop 25 forming a first stop to provide a maximum pressure to the outlet 21 by the pressure operated valve. Shown in Figure 3, the spring holder 33 is in the maximum upward position where the flat latching surfaces of barbs 44 engage the lower ring-shaped surface of stop 25 forming a second stop, and even though the set screw 40 and cap 41 shown in Figures 1 and 2 are removed, the spring holder does not leave the spring housing but control of the outlet pressure in chamber 15 would be at a minimum pressure.
  • A specific detailed showing of the spring holder 33 is shown in Figure 4 wherein the disc member 42 has the four resilient legs 43 projecting therefrom.
  • With such a pressure operated valve, the spring holder can be inserted into the spring housing and once inserted is held in place. The resilient projections or legs 43 are biased inward upon the downward movement of the spring holder in the valve housing to allow the barbs or projection extremities 44 to move past the stop 25; however, any upward movement of the spring holder is thereafter prevented. Any removal and replacement of the spring 34 by a spring of a different spring rate to change the outlet pressure of the pressure operated valve is prevented. This makes such a pressure regulator even more safe and reliable for ist use with gas appliances or furnaces.

Claims (5)

1. A pressure regulator (10) comprising:
a) a valve body (12) having a fluid inlet chamber (20, 14) and a fluid outlet chamber (21, 15) separated by an apertured wall (13) having a valve seat (22) opening therethrough,
b) a movable wall member (30) forming one side of said outlet chamber (15) to be exposed to a fluid pressure therein,
c) a valve closure member (32) connected to said movable wall member (13) and cooperable with said valve seat (22),
d) an adjustable abutment (40) provided in a spring housing (23) attached to said valve body (12), and
e) a loading spring (34) mounted between said movable wall member (30) and said abutment (40) whereby upon adjustment of the position of said abutment (40) the loading of said spring (34) and therewith the pressure maintained in said outlet chamber (15) can be changed; characterized in that
f) a spring holder (33) is provided between the spring (34) and the abutment (40);
g) said spring housing (23) has a stop (25) to limit a downward movement of said spring holder (33) and thus the maximum compression force on said spring (34) to limit the maximum pressure maintained in said outlet chamber (15),
h) said spring holder (33) has a resilient portion (43) for engaging a second stop (25) when said spring holder (33) moves upward to release said spring to prevent removal of said spring holder (33).
2. A pressure regulator according to claim 1, characterized in that
i) said movable wall member (30) is a flexible diaphragm sealed around its periphery in said valve body (12),
j) said loading spring (34) is a coil spring, k) said spring holder (33) can be inserted into said spring housing to move downward to compress said coil spring (34),
I) said resilient portion (43) has a sloping surface (44) on the downward side and moves freely inward and not engage said stop member (25), m) said resilient portion (43) has a flat latching surface (44) on the upward side for engaging said second second stop member (25) upon upward movement to prevent the removal of said adjustable spring holder (33).
3. A pressure regulator according to claim 1 or 2, characterized in that
n) said spring holder has a disc-like member (33) with at least two resilient portions (43) extending downward when said disc-like member is contained in said spring housing (23),
o) said resilient portions have barbs (44) on the free extremities whereby upon said spring holder being placed into said spring housing (23) said barbs cause said resilient portions (43) to move inward and avoid said stop (25); however, once in place with said barbs beyond said second stop member outwardly extending latching surfaces of said barbs (44) project beyond said second stop member, so that said spring holder (33) can't be removed from said spring housing (23).
4. A pressure regulator according to claim 1, 2 or 3, characterized in that said spring housing (23) has internal thread (24) for receiving a screw (40) forming the abutment for said spring holder (53) in a predetermined position to thereby establish a selected outlet pressure.
5. A pressure regulator according to one of the preceding claims, characterized in that said stop member (25) is an inwardly projecting raised portion inside the spring housing (33).
EP19870102015 1986-02-18 1987-02-13 Pressure regulator Expired - Lifetime EP0233604B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/830,144 US4621658A (en) 1986-02-18 1986-02-18 Non-removable spring holder for a pressure operated valve
US830144 1986-02-18

Publications (3)

Publication Number Publication Date
EP0233604A2 EP0233604A2 (en) 1987-08-26
EP0233604A3 EP0233604A3 (en) 1989-02-08
EP0233604B1 true EP0233604B1 (en) 1990-06-13

Family

ID=25256399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870102015 Expired - Lifetime EP0233604B1 (en) 1986-02-18 1987-02-13 Pressure regulator

Country Status (5)

Country Link
US (1) US4621658A (en)
EP (1) EP0233604B1 (en)
JP (1) JPS62194080A (en)
DE (1) DE3763263D1 (en)
DK (1) DK526886A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000222A (en) * 1990-03-30 1991-03-19 Honeywell Inc. Tamper resistant adjustment range control for the adjustment screw of a control device
US5492146A (en) * 1992-09-02 1996-02-20 Richards Industries, Inc. Pressure regulators
US6026850A (en) * 1996-02-27 2000-02-22 Global Agricultural Technology And Engineering, Llc Pressure regulating valve
US6209578B1 (en) 1998-12-23 2001-04-03 Global Agricultural Technology And Engineering, Llc Constant flow valve
US6170507B1 (en) 1999-03-03 2001-01-09 Honeywell International Inc. Gas valve with natural/LP gas conversion capability
US6273117B1 (en) 1999-07-09 2001-08-14 I-Flow Corporation Pressure regulator
US6619308B2 (en) * 1999-07-09 2003-09-16 I-Flow Corporation Pressure regulator
DE20108856U1 (en) * 2001-05-25 2002-10-02 Hengst Walter Gmbh & Co Kg Valve, especially bypass or anti-return valve
US6892755B2 (en) * 2003-02-28 2005-05-17 Baxter International Inc. Pressure regulator for infusor
US7341572B2 (en) * 2003-02-28 2008-03-11 Baxter International Inc. Infusor with flexible sheath
US7363938B1 (en) 2005-03-22 2008-04-29 Global Agricultural Technology And Engineering, Llc Constant flow valve assembly
US7445021B2 (en) * 2005-03-22 2008-11-04 Global Agricultural Technology And Engineering, Llc Constant flow valve
US20070221273A1 (en) * 2006-03-22 2007-09-27 Landers Jerry L Valve for beverage dispenser
US7814931B2 (en) 2006-07-12 2010-10-19 Global Agricultural Technology And Engineering, Llc Selectively actuated constant flow valve
US8240522B2 (en) 2007-10-16 2012-08-14 Global Agricultural Technology & Engineering Llc Dual function dispensing head for carbonated beverage machine
TWI827900B (en) * 2021-01-05 2024-01-01 白翼誌 Identification structure and application of gas valves with identification structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405927A (en) * 1964-06-06 1968-10-15 Kromschroeder Ag G Spring adjusting device for use in a pressure regulator
US3289692A (en) * 1964-08-05 1966-12-06 Honeywell Inc Spring adjusting means for a pressure operated valve
US3773071A (en) * 1972-03-13 1973-11-20 Maxitral Co Gas regulator
US3825029A (en) * 1973-01-02 1974-07-23 Robertshaw Controls Co Plural range pressure regulator construction or the like and the method of making the same or the like
US4223808A (en) * 1978-07-21 1980-09-23 Spray Safe Company, Inc. Refillable dispensing device having wiper seal
FR2528526A1 (en) * 1982-06-09 1983-12-16 Sfr Sa Robinetterie STOP FIXING IN A BEDGE OF A DEVICE

Also Published As

Publication number Publication date
EP0233604A2 (en) 1987-08-26
US4621658A (en) 1986-11-11
JPS62194080A (en) 1987-08-26
EP0233604A3 (en) 1989-02-08
DK526886D0 (en) 1986-11-05
DE3763263D1 (en) 1990-07-19
DK526886A (en) 1987-08-19

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